ASTM F2917-11

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:F2917 −11
StandardSpecification for
Bicycle Trailer Cycles Designed for Human Passengers
This standard is issued under the fixed designation F2917; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope ANSI Z535.6 Product Safety Information in Product
Manuals, Instructions, and Other Collateral Materials
1.1 This specification covers trailer cycles, intended to be
2.3 Federal Standards:
pulled behind bicycles, with seat post attachment, in order to
Title 16, CFR 1303 Lead in Coatings
transport children. It includes test methods for confirming that
Title 16, CFR 1500.3(b)(4)(i) Hazardous Substance
this specification is satisfied.
Title 16, CFR 1500.48 Sharp Points
1.2 The values stated in SI units are to be regarded as the
Title 16, CFR 1500.49 Sharp Edges
standard. The units given in parentheses are for information
Title 16, CFR 1501 Small Parts
only.
Title 16, CFR 1512 Requirements for Bicycles, Sections:
1.3 The following safety caveat applies to the chemical,
1512.18(n), Reflector Test
mechanical, or physical, or a combination thereof, test meth-
ods described herein and is meant specifically for those 3. Terminology
performing the tests (in an effort to provide them with notice to
3.1 Definitions of Terms Specific to This Standard:
take the appropriate precautions when conducting the tests).
3.1.1 lead bicycle—the bicycle used to tow the trailer cycle.
This standard does not purport to address all of the safety
3.1.2 normal use—applications described as intended use
concerns, if any, associated with its use. It is the responsibility
for the product found within the manufacturer’s instructional
of the user of this standard to establish appropriate safety and
literature.
health practices and determine the applicability of regulatory
3.1.3 normal use temperatures—temperature range within
limitations prior to use.
whichitshouldbeanticipatedthatthetrailercyclemaybeused
2. Referenced Documents to transport children. The range is from –7 to +50°C (62°).
2.1 ASTM Standards: 3.1.4 occupant—a child or person who is riding the trailer
cycle.
B117 Practice for Operating Salt Spray (Fog) Apparatus
D1230 Test Method for Flammability of Apparel Textiles
3.1.5 rider—apersonwhocontrolstheleadbicycletowhich
(Withdrawn 2010)
the trailer cycle is attached, and who is responsible for control
D4329 Practice for Fluorescent UV Exposure of Plastics
of the trailer cycle.
F2043 Classification for Bicycle Usage
3.1.6 trailer cycle—a transporting device, with a single rear
G23 Practice for Operating Light-Exposure Apparatus
wheel, designed to provide a tandem bicycle riding experience
(Carbon-Arc Type) With and Without Water for Exposure
for one or two children. The device includes the fastening
of Nonmetallic Materials (Withdrawn 2000)
arrangements for attaching and towing it behind a lead bicycle.
2.2 ANSI Standards:
3.1.7 useful product lifecycle—allowable range of time for
ANSI Z535.4 Product Safety Signs and Labels
continued use of a product from the date of manufacture as
described within the manufacturer’s instructional literature.
This specification is under the jurisdiction ofASTM Committee F08 on Sports
Equipment, Playing Surfaces, and Facilities and is the direct responsibility of 4. Requirements
Subcommittee F08.10 on Bicycles.
4.1 General—Trailer cycles shall be designed and manufac-
Current edition approved June 1, 2011. Published August 2011. DOI: 10.1520/
F2917-11. tured such that components with which an occupant may come
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
in contact do not cause injury when used in accordance with
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the manufacturer’s instructions. Exposed surfaces shall be free
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
The last approved version of this historical standard is referenced on
www.astm.org. AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St., 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
4th Floor, New York, NY 10036, http://www.ansi.org. www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2917−11
from burrs, sharp edges, and points. Refer to Title 16, CFR 5.2.2 Ensurethetrailercyclepedals,withthefootsurfaceof
1500, Parts 48 and 49, and Title 16, CFR 1501. Trailer cycles the pedal horizontal and the pedal crank in its lowest position,
shall be equipped with rear reflectors; pedal reflectors; side do not hit the ground.
reflectors on the wheel. Refer to Title 16, CFR 1512, Parts 16
5.3 Torsion Fatigue Test—The trailer cycle shall be
and 18(n).
mounted for fatigue testing as in Fig. 2.
4.2 Equipment—Trailer cycles shall be equipped with the
5.3.1 The trailer cycle wheel is removed.
following equipment: handlebar, seat, pedals, and a drivetrain
5.3.2 A fixture is created to apply a displacement load
to provide human power to the rear wheel. The seatpost shall
perpendicular to the ground and perpendicular to the centerline
have a minimum insertion marking as defined in Title 16, CFR
of the trailer cycle, through the rear wheel dropouts.
1512.
5.3.3 The trailer cycle shall be mounted vertically to a
4.3 Materials:
rigidly mounted dummy seatpost set at 71 6 2° from horizon-
4.3.1 All nonmetallic materials that compose structural
tal at the minimum height recommended by the manufacturer.
components will be subjected to either (1) 100 h of accelerated
5.3.4 A fully reversing torsion load shall be applied to the
weathering in accordance with Method 1 of Practice G23,or
trailer cycle calculated as follows:
(2) 60 h of accelerated weathering in accordance with Practice
D4329 prior to any testing. Torsion Load5 (1)
4.3.2 All painted materials shall comply with Title 16, CFR
~137 Nm/31.75 kg!3
1303.
4.3.3 Mechanical properties of materials used in the con-
~maximum recommended occupant weight for trailer cycle in kg!
struction of trailer cycles shall not fail as a result of exposure
to the temperature variances defined as normal use tempera-
5.3.5 The test shall be repeated for a total of 20 000 cycles.
tures in 3.1.6 under normal use applications or within useful
5.3.6 During testing, the technician shall look for cracks or
product lifecycle.
fractures or separation on the entire unit. If the trailer cycle
4.3.4 Materials known to be a hazardous substance, as
hitch is slipping, the test shall be paused and the trailer cycle
defined in Title 16, CFR 1500.3(b)(4)(i), shall not be used.
shall be realigned to vertical.
5.3.7 Remove the trailer cycle from the test equipment and
5. Test Methods
inspect the frame assembly. No part of the assembly shall have
5.1 Test Order—Perform the lean angle test first, then
failed, or have a visible fracture or crack.
torsion fatigue test, and then the bump fatigue test on the same
sample. 5.4 Bump Fatigue Test:
5.4.1 The trailer cycle shall be tested as in Fig. 3.
5.2 Lean Angle Test:
5.2.1 With the trailer cycle attached to a dummy lead bike 5.4.2 The trailer cycle shall be fitted with weights totaling
simulated by a post mounted to a hinge on the floor as in Fig. 125 % of the maximum recommended weight, and distributed
1, lean the lead bicycle 25° in each direction. as in Fig. 3. Load B shall be applied to one side of the
FIG. 1Lean Angle Test Fixture
F2917−11
frame cracks and any signs of deformation on the entire unit. If
the hitch slips, resulting in less than vertical alignment, the
trailer cycle shall be realigned to vertical. All notes shall be
recorded on the report.
5.4.5 Record the hitch mounting height, and where the
measurement was taken.
5.4.6 Testing shall be stopped at 10 000 cycles or failure.
5.4.7 Remove the trailer cycle from the test equipment and
inspect the wheel and frame assemblies. No part of these
assembliesshallhavefailed,orhaveavisiblefractureorcrack.
6. Marking, Labeling, and Instructions
6.1 General—Alltrailercyclesshallbepermanentlymarked
with information concerning the safe usage of the trailer cycle.
The markings shall be in locations easily visible to the user.
The trailer cycle shall also be accompanied by instructions on
the proper assembly (where assembly is required), attachment,
usage, removal, disassembly, storage, and maintenance of the
trailer cycle, and general bicycle safety. Instructions shall be
written in the native language(s) of the country(s) in which the
trailer will be offered for sale, and attached to the trailer, at the
time of purchase.
6.2 Where Cautions, Warnings, or Danger signals are at-
tached to the trailer cycle, they shall comply with the require-
ments ofANSI Z535.4. Where Cautions, Warnings, or Danger
signalsareincollateralmaterials,theyshallcomplywithANSI
Z535.6.
FIG. 2Torsion Fatigue Test of the Trailer Cycle with Connection
to Dummy Seatpost
6.3 Marking and Labeling—All trailer cycles shall be per-
manently marked with durable materials, resistant to weather,
fading, and abrasion with the following information:
handlebar. It shall be mounted to the handlebar directly, and
6.3.1 Name and ad
...